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Finding the Fourth Proportional to 86,609.97, 129,918.57 and 27,444.33

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Solution

The fourth proportional to 86,609.97, 129,918.57 and 27,444.33 is: 41,167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,609.97 : 129,918.57 = 27,444.33 : x
  2. Step 2: Convert to fraction form
    86,609.97/129,918.57 = 27,444.33/x
  3. Step 3: Cross multiply
    86,609.97x = 129,918.57 × 27,444.33
  4. Step 4: Simplify right side
    86,609.97x = 3,565,528,108.21
  5. Step 5: Solve for x
    x = 3,565,528,108.21/86,609.97
  6. Step 6: Final answer
    x = 41,167.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.